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Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp

Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp
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Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Mercruiser Upper Gearcase Pre/R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp
$ 120.00
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Item Details

  • All 120hp 2.5L & 140hp 3.0L 4cyl applications for Pre-Alpha/R/MR/ALPHA ONE Gen 1, so 1970-1990 as a general rule.
      • (Actually these were also used on Gen II drives 1991-1997)
  • The gear set here is 43-55766 / 43-55778 > 43-55778A3 (Sierra equivalent 18-2205) (Also Equivalent to 43-55766A2 / 43-55766A3)
    • 20-24 (tooth count) 1.98 Ratio for 4-cylinder GM Chevy 120hp 2.5L 153CID / 140hp 3.0L 4cyl 181CID sterndrive engines.
  • If you have any questions on compatibility, or any other questions about this item, please don't hesitate to contact me.
  • Freshwater Used Parts.
  • These look great and  were removed from a completely functional upper gearcase.
  • Purchase with confidence!

1970 1971 1972 1973 1974 1975 1976 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990


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